package com.sky.controller.admin;

import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;

@RestController
@RequestMapping("/admin/dish")
@Api(tags = "菜品管理")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;

    @PostMapping
    @ApiOperation("新增菜品")
    public Result save(@RequestBody DishDTO dishDTO){
        log.info("新增菜品，{}", dishDTO);
        dishService.saveDishWithFlavor(dishDTO);

        redisTemplate.delete("dish_" + dishDTO.getCategoryId());

        return Result.success();
    }

    /**
     * 分页查询
     */
    @GetMapping("/page")
    @ApiOperation("菜品分页查询")
    public Result<PageResult> pageQuery(DishPageQueryDTO queryDTO){
        log.info("菜品分页查询，{}", queryDTO);

        PageResult pageResult = dishService.pageQuery(queryDTO);

        return Result.success(pageResult);
    }

    @DeleteMapping
    @ApiOperation("删除菜品")
    public Result batchDelete(@RequestParam List<Long> ids){
        log.info("删除菜品，{}", ids);

        dishService.batchDelete(ids);

        clearCache();

        return Result.success();
    }

    /**
     * 根据id查询菜品
     */
    @GetMapping("/{id}")
    @ApiOperation("根据id查询菜品")
    public Result<DishVO> getById(@PathVariable Long id){
        log.info("根据id查询菜品，{}", id);

        return Result.success(dishService.getById(id));
    }

    /**
     * 更新菜品
     * @param dishDTO
     * @return
     * 菜品 -> 11
     * 菜品 -> 12
     * 问题：dishDTO 传递的分类是修改后的分类 12
     *  解决办法：
     *      1. 通过id查询原始数据 得到原来的分类id 11 然后删除11 12 号分类的数据
     *      2. 删除所欲的缓存(dish_开头)
     */
    @PutMapping
    @ApiOperation("修改菜品")
    public Result update(@RequestBody DishDTO dishDTO){
        log.info("修改菜品，{}", dishDTO);

        dishService.update(dishDTO);

        clearCache();

        return Result.success();
    }

    private void clearCache() {
        Set keys = redisTemplate.keys("dish_*");
        redisTemplate.delete(keys);
    }
}
